C90300

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SPECIFICATION CROSS-REFERENCE CHART

✔ STANDARD-STOCKED PRODUCT

Cast

Tin bronze alloys are typically found in gear, high-strength bushing and bearing applications where high strength and low speeds and heavy loads are present. Other high-strength applications for these alloys are pump impellers, piston rings, steam fittings and valve bodies. Tin bronze castings are utilized in movable bridge components, turntables for bridges and other structures for fixed and expansion bearings with slow or intermittent movement with heavy loads.

Info

Product Description: Tin Bronze
Solids: 1/2" to 10" O.D.
Tubes: 1" to 16" O.D.
Rectangles: Up to 20"
Standard Lengths: 144"
Shape/Form: semi-finished, mill stock or near-net shapes, anode, bar stock, billet/bloom, squares, hex, plate, profile or structural shape, flats/rectangular bar

Typical Uses

Building: heavy construction equipment
Fasteners: swivel
Industrial: bearings, bushings, gear blanks, gears, piston rings, pump bodies, pump impellers, valve bodies, valves
Plumbing: steam fittings

Chemical Composition

Cu%1 Pb% Sn% Zn% Fe% P%2 Ni%3 Al% S% Sb% Si%
Chemical Composition according to ASTM B505/B505M-18

1In determining Cu min., Cu may be calculated as Cu + Ni.  2For continuous castings, P shall be 1.5%, max.  3Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.4% min. Single values represent maximums.
86.00-
89.00
 
0.30
7.50-
9.00
3.00-
5.00
 
0.20
 
0.05
 
1.00
 
0.005
 
0.05
 
0.20
 
0.005

Machinability

Copper Alloy UNS No. Machinability Rating Density (lb/cu in at 68° F)
C90300 30 0.318

Mechanical Properties

Mechanical Properties according to ASTM B505/B505M-18
Tensile Strength, min Yield Strength, at .5% Extension Under Load, min Elongation, in 2 in. or 50 mm min Brinell Hardness Remarks
Ksi MPa Ksi MPa % typical BHN  
44 303 22 152 18 70 (500 kg)

Physical Properties

Physical Properties provided by CDA

  US Customary Metric
Melting Point - Liquidus 1832° F 1000° C
Melting Point - Solidus 1570° F 854° C
Density 0.318 lb/in3 at 68° F 8.80 gm/cm3 at 20° C
Specific Gravity 8.8 8.8
Electrical Conductivity 12% IACS at 68° F 0.069 MegaSiemens/cm at 20° C
Thermal Conductivity 43.2 Btu · ft/(hr · ft2·°F) at 68° F 74.8 W/m at 20° C
Coefficient of Thermal Expansion 10 · 10-6 per °F (68°-392° F) 17.3 · 10-6 per °C (20°-200° C)
Specific Heat Capacity 0.09 Btu/lb/°F at 68° F 377.1 J/kg at 293° C
Modulus of Elasticity in Tension 14000 ksi 96527 MPa
Magnetic Permeability* 1 1

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